Describe the New Feature

This comes from a discussions comment and seeks to include the fair CRPS verification statistic for ensembles, specifically the ECNT line type. As Roger indicates in a further comment on the Discussions, the fair CRPS " address(es) one particular form of bias in verification metrics for ensemble forecasts, namely that from assessing raw NWP output from a finite-size ensemble".
According to the literature linked in the Discussions, this output could be achieved fairly easily by copying the already-calculated CRPS code for ensembles and adjusting it, as illustrated in Equation 4 of Fricker, Ferro, & Stephenson, D.B. (2013).
POC for this should be @RogerHar

Acceptance Testing

We should work with the UK Met office to gather data for testing.
Describe tests required for new functionality.

Time Estimate

Estimate the amount of work required here.
Issues should represent approximately 1 to 3 days of work.

Sub-Issues

Consider breaking the new feature down into sub-issues.

• Add a checkbox for each sub-issue here.

Relevant Deadlines

List relevant project deadlines here or state NONE.

Funding Source

2799991

Define the Metadata

Assignee

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Labels

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Projects and Milestone

• Select Repository and/or Organization level Project(s) or add alert: NEED PROJECT ASSIGNMENT label
• Select Milestone as the next official version or Future Versions

Define Related Issue(s)

Consider the impact to the other METplus components.

• METplus, MET, METdatadb, METviewer, METexpress, METcalcpy, METplotpy

New Feature Checklist

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• Complete the issue definition above, including the Time Estimate and Funding source.
• Fork this repository or create a branch of develop.
  Branch name: feature_<Issue Number>_<Description>
• Complete the development and test your changes.
• Add/update log messages for easier debugging.
• Add/update unit tests.
• Add/update documentation.
• Push local changes to GitHub.
• Submit a pull request to merge into develop.
  Pull request: feature <Issue Number> <Description>
• Define the pull request metadata, as permissions allow.
  Select: Reviewer(s) and Linked issues
  Select: Repository level development cycle Project for the next official release
  Select: Milestone as the next official version
• Iterate until the reviewer(s) accept and merge your changes.
• Delete your fork or branch.
• Close this issue.